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25 degrees celsius is equal to how many degrees kelvin?
Answer: 25 ºC = 298 K
Which of the following is the correct formula to calculate area of a trapezium?
Let's call the parallel sides A and B, and the distance between them as H. The area of the trapezium, or K, is (A+B)H/2. K = (A+B)H/2
What would you change 298 kelvin into degrees celsius?
Use this equation to convert Kelvin to degrees Celsius/Centigrade: [°C] = [K] - 273.15
How do you calculate principal when amount rate of interest and time is given?
A = P*(1+R/100)T Where A = amount P = Principal R = Interest Rate (in percentage), and T = Time Since R and T are known, you can calculate (1+R/100)T = k, say. Then A = P*k so that P = A/k
How do you calculate an angle using the tangent?
You cannot calculate the angle using tangent: you need to use the inverse function: arctangent. The answer will be an angle, x, in the principal range (-90, 90) degrees. But it could be any (x + 180*k) for any integer k.
What state is oxygen at 298 K?
Oxygen is a gas at 298 K.
What is 298 Fahrenheit converted into kelvins?
298 degrees Fahrenheit = 420.93 K.
A balloon that contains 0.75 L of a gas at 25°C is cooled to –100°C. Calculate the new volume of the balloon.?
Using the ideal gas law, we can calculate the new volume of the balloon. Given that the initial volume is 0.75 L, the initial temperature is 25°C (298 K), and the final temperature is -100°C (173 K), we can use the equation (V1/T1) = (V2/T2) to find the new volume. Plugging in the values, we get V2 = (0.75 L * 173 K) / 298 K ≈ 0.44 L.
What is the numerical value of Kw at 298 k?
The value of Kw (ion product of water) at 298 K is approximately 1.00 x 10^-14.
What is the velocity of hydrogen at 298 K?
The average velocity of hydrogen molecules at 298 K can be calculated using the root mean square velocity formula, v = √(3kT/m), where k is the Boltzmann constant, T is the temperature in Kelvin, and m is the mass of a hydrogen molecule. The average velocity of hydrogen at 298 K would be around 1926 m/s.
Which element at 101.3kPa and 298 K?
At 101.3 kPa and 298 K, the element present is likely to be oxygen (O2) due to its high natural abundance in the atmosphere and its physical properties at that temperature and pressure.
Which compound is formed from its elements by an exothermic reaction at 298 K and 101.3 kPa?
Carbon dioxide (CO2) is formed from its elements (carbon and oxygen) by an exothermic reaction at 298 K and 101.3 kPa.
What is form for aluminum?
Aluminum is a metallic substance. It is solid at 298 K. It is silvery in color.
25 degrees celsius is equal to how many degrees kelvin?
Answer: 25 ºC = 298 K
Which direction of the reaction is favored at 298 k room temperature use the reaction I2s I2g when H 62.4 kJ.mol-1 and S 0.145 kJ.mol-1.k-1?
The direction of the reaction is favored when the Gibbs free energy change (ΔG) is negative. You can calculate ΔG using the equation ΔG = ΔH - TΔS, where T is the temperature in Kelvin. At 298 K, the sign of ΔG will depend on the values of ΔH and ΔS. If ΔG < 0, the reaction is favored in the forward direction.
Is 298k is standard temperature or 273.15?
298 K is the standard room temperature, while 273.15 K is the standard temperature for converting Celsius to Kelvin.
Which equation represents an exothermic reaction at 298 K?
An exothermic reaction is one where heat is released to the surroundings. An example of an exothermic reaction equation at 298 K is: 2H2(g) + O2(g) -> 2H2O(l) + heat
